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Old 12-19-2002, 01:05 AM
Nektopoli Nektopoli is offline
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Join Date: Dec 2002
Location: Mid-Atlantic, USA
Posts: 44
Re: reluctant oil pressure

Originally posted by stevemac
Have had my oil changed recently, in my '90 300E, with a 10-10 filter (old style) and 10-40 dino, and have noticed it now takes about three seconds for the pressure to jump to 3 bar at start-up. I have gathered on the forums that the oil filters include a check valve to keep the filter full, but is there also an "O" ring inside the filter housing to further prevent oil leakdown?? This delay has me worried, as start-up lube is the most critical.

Also, is it coincidental that the engine misses badly until the pressure builds up?? I cannot see the connection between crank-case pressure and the rest of the miriad variables that create the successful start-up!! The symptom is much more noticeable when the car is warm and since the oil change. Any ideas? TIA

Do you have any vavle train nosie during that 3 seconds of start up ?

And the miss might be an EGR problem.

"If it's not BLOWN, it sucks"

1998 C280 Sport - Member 744 Crew
1988 Toyota MR2-Kompressor(No. 3) 168K+ Miles
Prior MB Cars 1974 450SLC & 1985 190E 2.3

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